Inorganic Chemistry Frontiers,
Год журнала:
2023,
Номер
10(15), С. 4450 - 4455
Опубликована: Янв. 1, 2023
Three-dimensional
porous
Co
foam/TP
is
a
high-performance
catalyst
for
electrochemical
NO
3
−
-to-NH
conversion,
delivering
large
NH
yield
of
600.6
μmol
h
−1
cm
−2
and
high
faradaic
efficiency
96.5%.
Industrial
ammonia
production
mainly
relies
on
the
conventional
Haber–Bosch
process
accompanied
by
high
energy
consumption
and
plentiful
carbon
dioxide
emissions,
which
triggered
recent
interest
to
explore
more
energy‐efficient
environmentally
benign
alternatives.
Very
recently,
electrochemical
nitrite
reduction
in
an
aqueous
medium
promises
new
opportunities
for
advanced,
energy‐efficient,
sustainable
at
ambient
conditions.
The
formation
rate
Faradic
efficiency
are
strongly
associated
with
adopted
electrocatalysts;
therefore,
striving
high‐efficient
electrocatalysts
is
key
via
reaction.
Herein,
a
critical
overview
of
advances
reaction
presented,
highlighting
latest
innovative
heterogenous
including
noble
metal
catalysts,
transition‐metal‐based
their
compounds.
Meanwhile,
possible
pathway
electroreduction
ammonia,
detection,
catalytic
activity
descriptor
briefly
summarized.
Finally,
perspective
research
challenges
that
convert
outlined,
increasing
contributions
route
realizing
neutral
footprint.
Advanced Functional Materials,
Год журнала:
2023,
Номер
34(3)
Опубликована: Окт. 3, 2023
Abstract
Electroreduction
of
nitrite
to
ammonia
(NO
2
RR)
holds
great
promise
for
concurrently
achieving
efficient
NH
3
electrosynthesis
and
wastewater
purification.
This
study
first
develops
Ni
1
Ru
single‐atom
alloys
as
an
robust
NO
RR
catalyst.
Extensive
experiments
theoretical
computations
reveal
that
isolated
atoms
electronically
couple
their
adjacent
render
with
high
thermodynamic
stability,
boosted
−
‐to‐NH
hydrogenation
energetics
suppressed
hydrogen
evolution.
As
a
result,
assembled
in
flow
cell
shows
exceptional
yield
rate
37.5
mg
h
−1
cm
−2
‐Faradaic
efficiency
93.9%
at
current
density
312.3
mA
,
representing
one
the
highest
performances
ever
reported.
Abstract
The
electrocatalytic
synthesis
of
C–N
coupling
compounds
from
CO
2
and
nitrogenous
species
not
only
offers
an
effective
avenue
to
achieve
carbon
neutrality
reduce
environmental
pollution,
but
also
establishes
a
route
synthesize
valuable
chemicals,
such
as
urea,
amide,
amine.
This
innovative
approach
expands
the
application
range
product
categories
beyond
simple
carbonaceous
in
reduction,
which
is
becoming
rapidly
advancing
field.
review
summarizes
research
progress
urea
synthesis,
using
N
,
NO
−
3
species,
explores
emerging
trends
electrosynthesis
amide
amine
nitrogen
species.
Additionally,
future
opportunities
this
field
are
highlighted,
including
amino
acids
other
containing
bonds,
anodic
reactions
water
oxidation,
catalytic
mechanism
corresponding
reactions.
critical
captures
insights
aimed
at
accelerating
development
electrochemical
reactions,
confirming
superiority
method
over
traditional
techniques.
ACS Sustainable Chemistry & Engineering,
Год журнала:
2024,
Номер
12(7), С. 2783 - 2789
Опубликована: Фев. 2, 2024
Electrochemical
nitrite-to-ammonia
reduction
(NO2RR)
holds
great
promise
for
converting
harmful
NO2–
into
valuable
NH3.
Herein,
we
develop
Co
single
atoms
dispersed
on
a
C3N4
substrate
(Co1/C3N4)
as
an
efficient
catalyst
toward
the
NO2RR.
Experimental
and
theoretical
investigations
reveal
that
single-atom
sites
can
effectively
active
optimize
formation
energy
of
key
*NOH
intermediate
to
promote
→
NH3
energetics.
Remarkably,
Co1/C3N4
equipped
in
flow
cell
delivers
exceptional
NH3–Faradaic
efficiency
97.9%
yield
rate
1080.3
μmol
h–1cm–2
at
industrial-level
current
density
355
mA
cm–2,
along
with
long-term
durability
100
h
electrolysis,
showing
considerable
potential
practical
electrosynthesis.